Post B7oFds2u5Qz5BT5e5Y by LiamGilmartin@mastodon.ie
 (DIR) More posts by LiamGilmartin@mastodon.ie
 (DIR) Post #B7oFds2u5Qz5BT5e5Y by LiamGilmartin@mastodon.ie
       0 likes, 1 repeats
       
       A replica Roman odometer.  At the end of each Roman mile, a gear wheel releases a metal or hardwood ball into a box causing a quite loud noise. The balls in the box are counted when the desired point is reached.More information and credits:https://en.wikipedia.org/wiki/File:2012-08-17_Hodometer_anagoria.JPG #History #Rome #Math #Maths #Engineering